Description
The EcoFlow RIVER 3 Plus Smart Extra is an expansion battery: it does not work on its own. It plugs into the EcoFlow RIVER 3 Plus Smart Extra to extend its runtime, adding 572 Wh of reserve with no output sockets of its own (the station manages everything).
Who is this extra battery for?
For anyone who already owns the EcoFlow RIVER 3 Plus Smart Extra and finds the runtime too tight: long weekends, working from a van, longer home backup. You roughly double the reserve without buying a whole new station.
How much runtime does it add?
With 572 Wh more in LiFePO4 (long cycle life), you noticeably extend the time before a recharge: another night off-grid, a longer run for the fridge during an outage, or back-to-back work days without mains.
Compatibility: check before you buy
This is the key point: the battery is designed for the EcoFlow RIVER 3 Plus Smart Extra, and only that. It connects with the dedicated cable and the station drives it automatically. Make sure you have the matching station before ordering.
Why buy from Vantour?
We work directly with EcoFlow, not as an anonymous stock reseller: a 100% genuine, official product, stock managed by the brand (real availability) and after-sales handled by the manufacturer for the longest cover possible.
On price, to give you a concrete idea: Recommended retail price £239,00, already on sale at £109,00 at the brand, then £103,55 with our code CARO5 (-5% extra).
The code applies on its own, and we keep all the latest EcoFlow offers up to date.
Helping you choose
Not sure this is the right expansion battery for you? Our guide to off-grid electric autonomy in a van helps you size your real need.
FAQ
Can I use it on its own, without the station?
No. It is an expansion battery with no output sockets: it needs its compatible station to work.
How much does it add?
572 Wh, in LiFePO4.
